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From Stack <st...@duboce.net>
Subject Re: integration with HDFS centralized caching
Date Wed, 03 Feb 2016 05:54:35 GMT
On Tue, Feb 2, 2016 at 6:03 PM, Jesse Yates <jesse.k.yates@gmail.com> wrote:

> Hey all,
> I poked around a bit in the archives and in JIRA (as well as random
> googling) but couldn't seem to find anything about any integration HBase is
> doing with the "new" centralized caching in HDFS
> <https://issues.apache.org/jira/browse/HDFS-4949>.

> I was thinking something like integrating it as another option like the
> BlockCache's InMemoryTable, but instead letting HDFS mmap the file.
> Any pointers to JIRAs I missed would also be appreciated.
Talking to the boys a while back, it doesn't work for us. It only does big
stuff, not the 64k blocks that we sling. IIRC, you also don't have the
control we'd need (invalidations). No further work is planned for it either.


> Jesse

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